Eddy current testing probe and eddy current testing method
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United States of America Patent
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Feb 27, 2018
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N/A
app pub date -
Feb 12, 2014
filing date -
Oct 22, 2013
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Abstract
An eddy current testing probe includes: exciter coils 2 including a first exciter coil 2a and a second exciter coil 2b identical with each other and arranged in point symmetry, and each of which generates an alternating magnetic field to generate an eddy current in a test object; and detector coils 1 including a first detector coil 1a and a second detector coil 1b identical with each other, arranged in point symmetry, arranged in phase, and differentially connected to each other. The exciter coils 2 and the detector coils 1 are arranged on a single plane. A center of symmetry O on a center line of symmetry CL2 of the coils 2a, 2b, is identical with a center of symmetry O on a center line of symmetry CL1 of the coils 1a, 1b, and the CL1 intersects with the CL2 at a right angle.
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